Investigate how waves behave with other setting: Fixed, Loose, Manual, Pulse. What is the answer?

Which statement is true for light passing into a medium that is more optically dense than the first medium through which it past

The velocity of car is 80.0 miles per hour. what is the velocity of car in meters per second? (1 km -0.621 miles) m/s

Ahypothesis is? close agreement by competent observers of observations of the same phenomena. a guess that has been tested over and over again and always found to be true. an educated guess that has yet to be proven by experiment. the long side of a right triangle. a synthesis of a large collection of information that includes guesses.